Question

1) 9.(x+7)-12=24

2) 12-3x=(-30)

3) 95-105:x=60

4) x+35=12

5) (-24)-(10-x)=43

6) 6-(17+x)=(-16)

7) (x-18)-(-3)=0

8) 25-(x-6)=(-1)

Ai giải hết mình tick

Answer 1

1) 9 . (x + 7) - 12 = 24

9 . (x + 7) = 24 + 12

9 . (x + 7) = 36

x + 7 = 36 : 9

x + 7 = 4

x = 4 - 7

x = -3

2) 12 - 3x = -30

3x = 12 - (-30)

3x = 12 + 30

3x = 42

x = 42 : 3

x = 14

3) 95 - 105 : x = 60

105 : x = 95 - 60

105 : x = 35

x = 105 : 35

x = 3

4) x + 35 = 12

x = 12 - 35

x = -23

5) (-24) - (10 - x) = 43

-24 - 10 + x = 43

-34 + x = 43

x = 43 - (-34)

x = 43 + 34

x = 77

6) 6 - (17 + x) = -16

6 - 17 - x = -16

-11 - x = -16

x = -11 - (-16)

x = -11 + 16

x = 5

7) (x - 18) - (-3) = 0

x - 18 + 3 = 0

x - 18 = 0 - 3

x - 18 = -3

x = -3 + 18

x = 15

8) 25 - (x - 6) = -1

25 - x + 6 = -1

25 - x = -1 - 6

25 - x = -7

x = 25 - (-7)

x = 25 + 7

x = 32

Answer 2

1)9.(x+7)-12=24

9.(x+7)=24+12

9.(x+7)=36

x+7=36:9

x+7=4

x=4-7

x=-3

Answer 3

2)12-3x=-30

3x=12-(-30)

3x=42

x=42:3

x=14

Answer 4

3)95-105:x=60

105:x=95-60

105:x=35

x=105:35

x=3

Answer 5

4)x+35=12

x=12-35

x=-23

Answer 6

1)9.(x+7)-12=24

9.(x+7)=24+12

9.(x+7)=36

x+7=36:9

x+7=4

x=4-7

x=4+(-7)

x=-(7-4)

x=-3

2)12-3x=-30

3x=12-(-30)

3x=12+30

3x=42

x=42:3

x=14

3)95-105:x=60

105:x=95-60

105:x=35

x=105:35

x=3

4)x+35=12

x=12-35

x=12+(-35)

x=-(35-12)

x=-23

5)(-24)-(10-x)=43

10-x=(-24)-43

10-x=(-24)+(-43)

10-x=(-67)

x=10-(-67)

x=10+67

x=77

6)6-(17+x)=(-16)

17+x=6-(-16)

17+x=6+16

17+x=22

x=22-17

x=5

7)(x-18)-(-3)=0

x-18=0+(-3)

x-18=(-3)

x=(-3)+18

x=18-3

x=15

8)25-(x-6)=(-1)

x-6=25-(-1)

x-6=25+1

x-6=26

x=26+6

x=32